<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>姓名案例_计算属性简写</title>
    <!--引入vue-->
    <script type="text/javascript" src="../js/vue.js"></script>
</head>
<body>
    <!--准备好一个容器-->
    <div id="root">
        姓:<input type="text" v-model="firstName"><br/><br/>
        名:<input type="text" v-model="lastName"><br/><br/>
        全名:<span>{{fullName}}</span><br/><br/>
    </div>
</body>
<script type="text/javascript">
    Vue.config.priductionTip=false//阻止vue在启动时生成生产提示
    const vm=new Vue({
        el:'#root',
        data:{
            firstName:'张',
            lastName:'三'
        },
        computed:{
            //完整写法
            // fullName:{               
            //     get(){
            //         console.log('get被调用了')              
            //         return this.firstName + '-' + this.lastName
            //     },
            //     set(value){
            //         console.log('set',value)
            //         const arr = value.split('-')
            //         this.firstName = arr[0]
            //         this.lastName = arr[1]
            //     }
            // }
            //简写
            fullName(){
                console.log('get被调用了')
                return this.firstName + '-' + this.lastName
            }
        }  
    })
       
</script>
</html>